Tim.Deegan at citrix
Jun 4, 2009, 3:02 AM
Post #2 of 2
At 15:37 +0100 on 03 Jun (1244043432), Ian Pratt wrote:
> I'd very much like to see the ability to add type-codes to pages that
> enable synchronous and asynchronous triggers[*] to be delivered to a
> "monitor application" when pages are accessed, written, or
> executed[**]. These events can be captured through a fairly simple
> modification to the HAP and shadow code, and then delivered to the
> nominated monitor application in a manner very similar to the
> mechanism used for delivering IO and MMIO events to qemu-dm.
Yes, I've wanted to do this sort of thing for years. Part of it is
already being developed as part of Patrick Colp's paging patches
(i.e. synchronous alerts that a guest page is missing). Adding other
similar types later will be straightforward.
Tim Deegan <Tim.Deegan [at] citrix>
Principal Software Engineer, Citrix Systems (R&D) Ltd.
[Company #02300071, SL9 0DZ, UK.]
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